Rotor



. vane or discharge sections 3 are adjustable about the axes of the pivots 4, 5 and rela'- tivel to the'corresponding surfaces of the fix vane sections 2. While the turbine is operating normally, the waterjis being delivered against the pressure surfaces 24 in a well known manner, and the. suction surfaces '25am exposed to an under preure or suction created by the water flowing through the draft tube. If it is desired to veg thedischarge angle of the rotor, the sha 11 may be rotated l relatively to the shaft 1-3, either while the turbine is ino ration or while it is at rest in any desirab e manner. Rotation of the shaft 11 causes the block 10 to move longitudinally of the adjustin shaftby. virtue of the screw threads 12, t ereby and causes all ofthe movable vane sections 3 to simultaneously swing about the axes of the pivots 4, 5 in an obvious manner. Durin such ad- `associated with said 'ustment of the vane sections 3, e thrust arings 17, 18 positively revent lon 'tudinal displacement of the s aft 11 whi e permitting free rotation thereof. After adjustment has been effected, the screw threads 12 positively lock the movable vane sections 3 inadjusted position. The chamber within the rotor hub may be filled with grease orv other lubricant thereby assuring abundant lubrication of the bearing surfaces. The entire rotor may be uickly dismantled by re-V moval of the clamping bolts 14 and the outer pivots 4 insure maximum rigidity of the structure. These outer pivots 4, furthermore permit reduction of the diameter of the inner pivots 5 and of the hub, to a minimum, thereby providing a relatively compact rotor structure.

It should be understood that it is not desired to limit the invention to the exact details of construction and operation herein shown and described, for various modications within the scope of the claims may occur to persons skilled in the art.

^ It is claimed and desired to secure by Letf ters Patent:

1. In a rotor, a hub a vane section rigidly hub, and another vane section movably supported directly by both said rigid vane'section and said hub.

2. In a rotor, a hub, a vane section rigidly ub by means of cap.

vane section pivotally supported b lfixed vane section and byv all of said hub associated with said hub, and another vane section movably supported at its outer end by said rigid vane section and` at its inner end ly said hub.

3. n a rotor, a hub, and a plurality of vanes associated with said hub, each of said vanescom rising a section formed integral with said ub, and another section pivotally supported by said hub and by said first mentioned vane section.

4. In a rotor, alhub comprising detachable portions, a vane section rigidly associated with one of said hub portions, and another said portions.

5. In a rotor, a hub comprising detachable portions, and a plurality of vanes associated with said hub, each of said vanes comprising a fixed section formed integral with one of said hub portions, and a movable section pivotally sup oited at its outer end by an adjacent fixe Vane Section and at its inner end bIy all of said hub portions.

6. n a rotor, a hub comprising detachable portions forming a chamber, a vane section rigidly associated with one of said hub portions, a movable vane section pivotally supported by said fixed vane section and by said ub ortioiis, and means within said cliamber orl adjusting said movable vane section about its pivotal axis.

7. In a rotor, a hub comprisin detachable portions coacting at a plane sur ace,"a vane section rigidly associated with one of said hub portions, and a movable vane section p ivotally supported between said hub portions and in the lane of said surface.

8. In a rotor, a ub comprising detachable portions coacting along a plane surface, a vane section formed integral with one of said hub portions, and a movable vane section pivotally supported by said fixed vane section and by sai hub, the pivotal axis of said movable vane section lying in the plane of said surface.

9. .In a. rotor, a hub having a chamber therein, a plurality 'of guidewa s formed within said hub a jacent to saidY chamber a movable vane section supported by said hub, a block movable along said guideways, means connecting said block and said movable vane section, and means for moving said block along said guideways to vary the position of said vane section.

10. In a rotor, a hub comprising detachable portions forming a chamber, each of said portions. having ideways thereon adjacent to said. cham r, a block coacting with .said guideways, a vane section rigidly associated with said hub, a movable vane section adjustably supported by said rigid vane section and -by said hub, means connecting said block and said movable vane section, and means for moving said block inname along said guideways to adjust said movable vane section relatively to said rigid vane section ll., lin a rotor, a hub able portions :termin a chamber, a vane section formed integra with one of said hub portions, a movable vane section pivotally supported by said fixed vane section and by said huh portions, an adjusting shaft rotatable Within said chamber but'lixed against longitudinal displacement, a block movable along said shaft by the rotation thereof, and means for transmittin adjusting motion from said block .to said movable vane section..

i2. In a rotor, a hub having a chamber therein, a vane section formed integral with said hub, a movable vane section pivotally supported by said integral vane section and by said hub, a rotary adjusting shaft having a threaded portion within said chamber, a threaded block movable along said shaft by the rotation thereof, and a link pivotally associated with said block and with said movable vane section. Y

i3. In a rotor, a hub having a chamber therein, an inlet vane section rigidly associated with said hub, a discharge vane section pivotally associated with said rigid comprising detach vane section and with said hub, said vane sections having cooperating rassure and suction faces, and means within said cham ber for moving said pivoted vane section relatively to sald rigid vane section to vary the discharge angle of said rotor While maintaining a lixed inlet angle therefor..

14. Ina rotor, a hub, an inlet vane section formed integral with said hub, a discharge vane section pivotally associated with said hub, said sections forming a dovetail shaped vane radiating from said hub, and means Within said hub for relatively adjusting said sections.

15. In a rotor, a hub, a plurality of nonoverlapping vanes radiating from said hub, each of said vanes comprising relatively fixed and movable sections,` and means within said hub for relatively adjusting said sections. Y

16. In a rotor, a hub, and a plurality of non-overlapping vanes radiating from said hub, each of said variesl comprising a section formed integral with said hub, and a movilble section pivotally supported by said In testimon whereof, the signature of the inventor is aiiixed hereto.

JAMES F. ROBERTS. 

